mail.sovross.ru has no NS records.
NS records for this zone are defined at sovross.ru.
NS records for this zone are defined at sovross.ru.
Question and response
Question
dig mail.sovross.ru. NS
Answer
The response has no answer records.
Authority
sovross.ru. 3600 SOA mail.sovross.ru. tdi.sovross.ru. 2025012218 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0